Income Taxes Income Taxes	9 Months Ended
Income Taxes Income Taxes	Sep. 30, 2014
Income Tax Disclosure [Abstract]
Income Taxes	Note 3. Income Taxes Our effective tax rate generally exceeds the federal statutory rate of 35% due to the impact of state taxes and, to a lesser extent, certain other non-deductible items. For the three and nine months ended September 30, 2014, our effective tax rate was 37.1% and 38.7%, respectively, as compared to 36.9% and 37.3% for the same periods in 2013, respectively. Our effective tax rate for the nine months ended September 30, 2013 included favorable tax credits for the use of alternative fuels provided by the American Taxpayer Relief Act of 2012, which expired in 2013. Our effective tax rates for each of the three and nine months ended September 30, 2014 and 2013 were impacted by favorable adjustments related to state taxes and other federal credits.

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References+ Details